Title :
A 32-element frequency-steered array antenna for reflectometry in W-band
Author :
Rohmann, Peter ; Wolf, Stefan ; Kasparek, Walter ; Plaum, B. ; Hesselbarth, Jan
Author_Institution :
Inst. fur Grenzflachenverfahrenstechnik und Plasmatechnologie, Univ. Stuttgart, Stuttgart, Germany
Abstract :
In fusion plasma experiments, Doppler reflectometry is used as a contactless diagnostic to evaluate density fluctuations and plasma rotation profiles. It demands a steerable beam that provides a defined spot-size for the wave plasma interaction and multiple frequencies to probe plasma regions of different densities. In this paper, the suitability of a frequency-scanned phased array as a front-end for a Doppler reflectometry system is demonstrated.
Keywords :
antenna feeds; antennas in plasma; beam steering; electromagnetic wave reflection; microwave reflectometry; millimetre wave antenna arrays; 32-element frequency-steered array antenna; Doppler reflectometry system; W-band; density fluctuation evaluation; electromagnetic wave reflection; fusion plasma experiments; local refractive index; microwave reflectometry; plasma region probing; plasma rotation profile evaluation; wave plasma interaction; Arrays; Couplings; Doppler effect; Feeds; Plasmas; Prototypes;
Conference_Titel :
Phased Array Systems & Technology, 2013 IEEE International Symposium on
Conference_Location :
Waltham, MA
DOI :
10.1109/ARRAY.2013.6731889
